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-rw-r--r--tools/nogo/BUILD10
-rw-r--r--tools/nogo/analyzers.go131
-rw-r--r--tools/nogo/build.go16
-rw-r--r--tools/nogo/check/BUILD2
-rw-r--r--tools/nogo/check/main.go92
-rw-r--r--tools/nogo/config.go725
-rw-r--r--tools/nogo/defs.bzl179
-rw-r--r--tools/nogo/filter/BUILD14
-rw-r--r--tools/nogo/filter/main.go131
-rw-r--r--tools/nogo/findings.go63
-rwxr-xr-xtools/nogo/gentest.sh48
-rw-r--r--tools/nogo/matchers.go172
-rw-r--r--tools/nogo/nogo.go175
-rw-r--r--tools/nogo/register.go67
-rw-r--r--tools/nogo/util/BUILD9
-rw-r--r--tools/nogo/util/util.go85
16 files changed, 813 insertions, 1106 deletions
diff --git a/tools/nogo/BUILD b/tools/nogo/BUILD
index 3c6be3339..12b8b597c 100644
--- a/tools/nogo/BUILD
+++ b/tools/nogo/BUILD
@@ -20,20 +20,14 @@ nogo_stdlib(
visibility = ["//visibility:public"],
)
-sh_binary(
- name = "gentest",
- srcs = ["gentest.sh"],
- visibility = ["//visibility:public"],
-)
-
go_library(
name = "nogo",
srcs = [
+ "analyzers.go",
"build.go",
"config.go",
- "matchers.go",
+ "findings.go",
"nogo.go",
- "register.go",
],
nogo = False,
visibility = ["//:sandbox"],
diff --git a/tools/nogo/analyzers.go b/tools/nogo/analyzers.go
new file mode 100644
index 000000000..b919bc2f8
--- /dev/null
+++ b/tools/nogo/analyzers.go
@@ -0,0 +1,131 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package nogo
+
+import (
+ "encoding/gob"
+
+ "golang.org/x/tools/go/analysis"
+ "golang.org/x/tools/go/analysis/passes/asmdecl"
+ "golang.org/x/tools/go/analysis/passes/assign"
+ "golang.org/x/tools/go/analysis/passes/atomic"
+ "golang.org/x/tools/go/analysis/passes/bools"
+ "golang.org/x/tools/go/analysis/passes/buildtag"
+ "golang.org/x/tools/go/analysis/passes/cgocall"
+ "golang.org/x/tools/go/analysis/passes/composite"
+ "golang.org/x/tools/go/analysis/passes/copylock"
+ "golang.org/x/tools/go/analysis/passes/errorsas"
+ "golang.org/x/tools/go/analysis/passes/httpresponse"
+ "golang.org/x/tools/go/analysis/passes/loopclosure"
+ "golang.org/x/tools/go/analysis/passes/lostcancel"
+ "golang.org/x/tools/go/analysis/passes/nilfunc"
+ "golang.org/x/tools/go/analysis/passes/nilness"
+ "golang.org/x/tools/go/analysis/passes/printf"
+ "golang.org/x/tools/go/analysis/passes/shadow"
+ "golang.org/x/tools/go/analysis/passes/shift"
+ "golang.org/x/tools/go/analysis/passes/stdmethods"
+ "golang.org/x/tools/go/analysis/passes/stringintconv"
+ "golang.org/x/tools/go/analysis/passes/structtag"
+ "golang.org/x/tools/go/analysis/passes/tests"
+ "golang.org/x/tools/go/analysis/passes/unmarshal"
+ "golang.org/x/tools/go/analysis/passes/unreachable"
+ "golang.org/x/tools/go/analysis/passes/unsafeptr"
+ "golang.org/x/tools/go/analysis/passes/unusedresult"
+ "honnef.co/go/tools/staticcheck"
+ "honnef.co/go/tools/stylecheck"
+
+ "gvisor.dev/gvisor/tools/checkescape"
+ "gvisor.dev/gvisor/tools/checkunsafe"
+)
+
+// AllAnalyzers is a list of all available analyzers.
+var AllAnalyzers = []*analysis.Analyzer{
+ asmdecl.Analyzer,
+ assign.Analyzer,
+ atomic.Analyzer,
+ bools.Analyzer,
+ buildtag.Analyzer,
+ cgocall.Analyzer,
+ composite.Analyzer,
+ copylock.Analyzer,
+ errorsas.Analyzer,
+ httpresponse.Analyzer,
+ loopclosure.Analyzer,
+ lostcancel.Analyzer,
+ nilfunc.Analyzer,
+ nilness.Analyzer,
+ printf.Analyzer,
+ shift.Analyzer,
+ stdmethods.Analyzer,
+ stringintconv.Analyzer,
+ shadow.Analyzer,
+ structtag.Analyzer,
+ tests.Analyzer,
+ unmarshal.Analyzer,
+ unreachable.Analyzer,
+ unsafeptr.Analyzer,
+ unusedresult.Analyzer,
+ checkescape.Analyzer,
+ checkunsafe.Analyzer,
+}
+
+// EscapeAnalyzers is a list of escape-related analyzers.
+var EscapeAnalyzers = []*analysis.Analyzer{
+ checkescape.EscapeAnalyzer,
+}
+
+func register(all []*analysis.Analyzer) {
+ // Register all fact types.
+ //
+ // N.B. This needs to be done recursively, because there may be
+ // analyzers in the Requires list that do not appear explicitly above.
+ registered := make(map[*analysis.Analyzer]struct{})
+ var registerOne func(*analysis.Analyzer)
+ registerOne = func(a *analysis.Analyzer) {
+ if _, ok := registered[a]; ok {
+ return
+ }
+
+ // Register dependencies.
+ for _, da := range a.Requires {
+ registerOne(da)
+ }
+
+ // Register local facts.
+ for _, f := range a.FactTypes {
+ gob.Register(f)
+ }
+
+ registered[a] = struct{}{} // Done.
+ }
+ for _, a := range all {
+ registerOne(a)
+ }
+}
+
+func init() {
+ // Add all staticcheck analyzers.
+ for _, a := range staticcheck.Analyzers {
+ AllAnalyzers = append(AllAnalyzers, a)
+ }
+ // Add all stylecheck analyzers.
+ for _, a := range stylecheck.Analyzers {
+ AllAnalyzers = append(AllAnalyzers, a)
+ }
+
+ // Register lists.
+ register(AllAnalyzers)
+ register(EscapeAnalyzers)
+}
diff --git a/tools/nogo/build.go b/tools/nogo/build.go
index 55d34760f..d173cff1f 100644
--- a/tools/nogo/build.go
+++ b/tools/nogo/build.go
@@ -20,22 +20,6 @@ import (
"os"
)
-var (
- // internalPrefix is the internal path prefix. Note that this is not
- // special, as paths should be passed relative to the repository root
- // and should not have any special prefix applied.
- internalPrefix = fmt.Sprintf("^")
-
- // internalDefault is applied when no paths are provided.
- internalDefault = fmt.Sprintf("%s/.*", notPath("external"))
-
- // generatedPrefix is a regex for generated files.
- generatedPrefix = "^(.*/)?(bazel-genfiles|bazel-out|bazel-bin)/"
-
- // externalPrefix is external workspace packages.
- externalPrefix = "^external/"
-)
-
// findStdPkg needs to find the bundled standard library packages.
func findStdPkg(GOOS, GOARCH, path string) (io.ReadCloser, error) {
if path == "C" {
diff --git a/tools/nogo/check/BUILD b/tools/nogo/check/BUILD
index 21ba2c306..e18483a18 100644
--- a/tools/nogo/check/BUILD
+++ b/tools/nogo/check/BUILD
@@ -2,8 +2,6 @@ load("//tools:defs.bzl", "go_binary")
package(licenses = ["notice"])
-# Note that the check binary must be public, since an aspect may be applied
-# across lots of different rules in different repositories.
go_binary(
name = "check",
srcs = ["main.go"],
diff --git a/tools/nogo/check/main.go b/tools/nogo/check/main.go
index 3828edf3a..69bdfe502 100644
--- a/tools/nogo/check/main.go
+++ b/tools/nogo/check/main.go
@@ -16,9 +16,99 @@
package main
import (
+ "encoding/json"
+ "flag"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+
"gvisor.dev/gvisor/tools/nogo"
)
+var (
+ packageFile = flag.String("package", "", "package configuration file (in JSON format)")
+ stdlibFile = flag.String("stdlib", "", "stdlib configuration file (in JSON format)")
+ findingsOutput = flag.String("findings", "", "output file (or stdout, if not specified)")
+ factsOutput = flag.String("facts", "", "output file for facts (optional)")
+ escapesOutput = flag.String("escapes", "", "output file for escapes (optional)")
+)
+
+func loadConfig(file string, config interface{}) interface{} {
+ // Load the configuration.
+ f, err := os.Open(file)
+ if err != nil {
+ log.Fatalf("unable to open configuration %q: %v", file, err)
+ }
+ defer f.Close()
+ dec := json.NewDecoder(f)
+ dec.DisallowUnknownFields()
+ if err := dec.Decode(config); err != nil {
+ log.Fatalf("unable to decode configuration: %v", err)
+ }
+ return config
+}
+
func main() {
- nogo.Main()
+ // Parse all flags.
+ flag.Parse()
+
+ var (
+ findings []nogo.Finding
+ factData []byte
+ err error
+ )
+
+ // Check & load the configuration.
+ if *packageFile != "" && *stdlibFile != "" {
+ log.Fatalf("unable to perform stdlib and package analysis; provide only one!")
+ }
+
+ // Run the configuration.
+ if *stdlibFile != "" {
+ // Perform basic analysis.
+ c := loadConfig(*stdlibFile, new(nogo.StdlibConfig)).(*nogo.StdlibConfig)
+ findings, factData, err = nogo.CheckStdlib(c, nogo.AllAnalyzers)
+
+ } else if *packageFile != "" {
+ // Perform basic analysis.
+ c := loadConfig(*packageFile, new(nogo.PackageConfig)).(*nogo.PackageConfig)
+ findings, factData, err = nogo.CheckPackage(c, nogo.AllAnalyzers, nil)
+
+ // Do we need to do escape analysis?
+ if *escapesOutput != "" {
+ escapes, _, err := nogo.CheckPackage(c, nogo.EscapeAnalyzers, nil)
+ if err != nil {
+ log.Fatalf("error performing escape analysis: %v", err)
+ }
+ if err := nogo.WriteFindingsToFile(escapes, *escapesOutput); err != nil {
+ log.Fatalf("error writing escapes to %q: %v", *escapesOutput, err)
+ }
+ }
+ } else {
+ log.Fatalf("please provide at least one of package or stdlib!")
+ }
+
+ // Check that analysis was successful.
+ if err != nil {
+ log.Fatalf("error performing analysis: %v", err)
+ }
+
+ // Save facts.
+ if *factsOutput != "" {
+ if err := ioutil.WriteFile(*factsOutput, factData, 0644); err != nil {
+ log.Fatalf("error saving findings to %q: %v", *factsOutput, err)
+ }
+ }
+
+ // Write all findings.
+ if *findingsOutput != "" {
+ if err := nogo.WriteFindingsToFile(findings, *findingsOutput); err != nil {
+ log.Fatalf("error writing findings to %q: %v", *findingsOutput, err)
+ }
+ } else {
+ for _, finding := range findings {
+ fmt.Fprintf(os.Stdout, "%s\n", finding.String())
+ }
+ }
}
diff --git a/tools/nogo/config.go b/tools/nogo/config.go
index b591b1509..2fea5b3e1 100644
--- a/tools/nogo/config.go
+++ b/tools/nogo/config.go
@@ -15,512 +15,247 @@
package nogo
import (
- "golang.org/x/tools/go/analysis"
- "golang.org/x/tools/go/analysis/passes/asmdecl"
- "golang.org/x/tools/go/analysis/passes/assign"
- "golang.org/x/tools/go/analysis/passes/atomic"
- "golang.org/x/tools/go/analysis/passes/bools"
- "golang.org/x/tools/go/analysis/passes/buildtag"
- "golang.org/x/tools/go/analysis/passes/cgocall"
- "golang.org/x/tools/go/analysis/passes/composite"
- "golang.org/x/tools/go/analysis/passes/copylock"
- "golang.org/x/tools/go/analysis/passes/errorsas"
- "golang.org/x/tools/go/analysis/passes/httpresponse"
- "golang.org/x/tools/go/analysis/passes/loopclosure"
- "golang.org/x/tools/go/analysis/passes/lostcancel"
- "golang.org/x/tools/go/analysis/passes/nilfunc"
- "golang.org/x/tools/go/analysis/passes/nilness"
- "golang.org/x/tools/go/analysis/passes/printf"
- "golang.org/x/tools/go/analysis/passes/shadow"
- "golang.org/x/tools/go/analysis/passes/shift"
- "golang.org/x/tools/go/analysis/passes/stdmethods"
- "golang.org/x/tools/go/analysis/passes/stringintconv"
- "golang.org/x/tools/go/analysis/passes/structtag"
- "golang.org/x/tools/go/analysis/passes/tests"
- "golang.org/x/tools/go/analysis/passes/unmarshal"
- "golang.org/x/tools/go/analysis/passes/unreachable"
- "golang.org/x/tools/go/analysis/passes/unsafeptr"
- "golang.org/x/tools/go/analysis/passes/unusedresult"
- "honnef.co/go/tools/staticcheck"
- "honnef.co/go/tools/stylecheck"
-
- "gvisor.dev/gvisor/tools/checkescape"
- "gvisor.dev/gvisor/tools/checkunsafe"
+ "fmt"
+ "regexp"
)
-var analyzerConfig = map[*analysis.Analyzer]matcher{
- // Standard analyzers.
- asmdecl.Analyzer: alwaysMatches(),
- assign.Analyzer: externalExcluded(
- ".*gazelle/walk/walk.go", // False positive.
- ),
- atomic.Analyzer: alwaysMatches(),
- bools.Analyzer: alwaysMatches(),
- buildtag.Analyzer: alwaysMatches(),
- cgocall.Analyzer: alwaysMatches(),
- composite.Analyzer: and(
- disableMatches(), // Disabled for now.
- resultExcluded{
- "Object_",
- "Range{",
- },
- ),
- copylock.Analyzer: internalMatches(), // Common external issues (e.g. protos).
- errorsas.Analyzer: alwaysMatches(),
- httpresponse.Analyzer: alwaysMatches(),
- loopclosure.Analyzer: alwaysMatches(),
- lostcancel.Analyzer: internalMatches(), // Common external issues.
- nilfunc.Analyzer: alwaysMatches(),
- nilness.Analyzer: and(
- internalMatches(), // Common "tautological checks".
- internalExcluded(
- "pkg/sentry/platform/kvm/kvm_test.go", // Intentional.
- "tools/bigquery/bigquery.go", // False positive.
- ),
- ),
- printf.Analyzer: alwaysMatches(),
- shift.Analyzer: alwaysMatches(),
- stdmethods.Analyzer: internalMatches(), // Common external issues (e.g. methods named "Write").
- stringintconv.Analyzer: and(
- internalExcluded(),
- externalExcluded(
- ".*protobuf/.*.go", // Bad conversions.
- ".*flate/huffman_bit_writer.go", // Bad conversion.
+// GroupName is a named group.
+type GroupName string
+
+// AnalyzerName is a named analyzer.
+type AnalyzerName string
+
+// Group represents a named collection of files.
+type Group struct {
+ // Name is the short name for the group.
+ Name GroupName `yaml:"name"`
+
+ // Regex matches all full paths in the group.
+ Regex string `yaml:"regex"`
+ regex *regexp.Regexp `yaml:"-"`
+
+ // Default determines the default group behavior.
+ //
+ // If Default is true, all Analyzers are enabled for this
+ // group. Otherwise, Analyzers must be individually enabled
+ // by specifying a (possible empty) ItemConfig for the group
+ // in the AnalyzerConfig.
+ Default bool `yaml:"default"`
+}
+
+func (g *Group) compile() error {
+ r, err := regexp.Compile(g.Regex)
+ if err != nil {
+ return err
+ }
+ g.regex = r
+ return nil
+}
+
+// ItemConfig is an (Analyzer,Group) configuration.
+type ItemConfig struct {
+ // Exclude are analyzer exclusions.
+ //
+ // Exclude is a list of regular expressions. If the corresponding
+ // Analyzer emits a Finding for which Finding.Position.String()
+ // matches a regular expression in Exclude, the finding will not
+ // be reported.
+ Exclude []string `yaml:"exclude,omitempty"`
+ exclude []*regexp.Regexp `yaml:"-"`
+
+ // Suppress are analyzer suppressions.
+ //
+ // Suppress is a list of regular expressions. If the corresponding
+ // Analyzer emits a Finding for which Finding.Message matches a regular
+ // expression in Suppress, the finding will not be reported.
+ Suppress []string `yaml:"suppress,omitempty"`
+ suppress []*regexp.Regexp `yaml:"-"`
+}
+
+func compileRegexps(ss []string, rs *[]*regexp.Regexp) error {
+ *rs = make([]*regexp.Regexp, 0, len(ss))
+ for _, s := range ss {
+ r, err := regexp.Compile(s)
+ if err != nil {
+ return err
+ }
+ *rs = append(*rs, r)
+ }
+ return nil
+}
+
+func (i *ItemConfig) compile() error {
+ if i == nil {
+ // This may be nil if nothing is included in the
+ // item configuration. That's fine, there's nothing
+ // to compile and nothing to exclude & suppress.
+ return nil
+ }
+ if err := compileRegexps(i.Exclude, &i.exclude); err != nil {
+ return fmt.Errorf("in exclude: %w", err)
+ }
+ if err := compileRegexps(i.Suppress, &i.suppress); err != nil {
+ return fmt.Errorf("in suppress: %w", err)
+ }
+ return nil
+}
+
+func (i *ItemConfig) merge(other *ItemConfig) {
+ i.Exclude = append(i.Exclude, other.Exclude...)
+ i.Suppress = append(i.Suppress, other.Suppress...)
+}
+
+func (i *ItemConfig) shouldReport(fullPos, msg string) bool {
+ if i == nil {
+ // See above.
+ return true
+ }
+ for _, r := range i.exclude {
+ if r.MatchString(fullPos) {
+ return false
+ }
+ }
+ for _, r := range i.suppress {
+ if r.MatchString(msg) {
+ return false
+ }
+ }
+ return true
+}
+
+// AnalyzerConfig is the configuration for a single analyzers.
+//
+// This map is keyed by individual Group names, to allow for different
+// configurations depending on what Group the file belongs to.
+type AnalyzerConfig map[GroupName]*ItemConfig
+
+func (a AnalyzerConfig) compile() error {
+ for name, gc := range a {
+ if err := gc.compile(); err != nil {
+ return fmt.Errorf("invalid group %q: %v", name, err)
+ }
+ }
+ return nil
+}
+
+func (a AnalyzerConfig) merge(other AnalyzerConfig) {
+ // Merge all the groups.
+ for name, gc := range other {
+ old, ok := a[name]
+ if !ok || old == nil {
+ a[name] = gc // Not configured in a.
+ continue
+ }
+ old.merge(gc)
+ }
+}
+
+func (a AnalyzerConfig) shouldReport(groupConfig *Group, fullPos, msg string) bool {
+ gc, ok := a[groupConfig.Name]
+ if !ok {
+ return groupConfig.Default
+ }
+
+ // Note that if a section appears for a particular group
+ // for a particular analyzer, then it will now be enabled,
+ // and the group default no longer applies.
+ return gc.shouldReport(fullPos, msg)
+}
+
+// Config is a nogo configuration.
+type Config struct {
+ // Prefixes defines a set of regular expressions that
+ // are standard "prefixes", so that files can be grouped
+ // and specific rules applied to individual groups.
+ Groups []Group `yaml:"groups"`
- // Runtime internal violations.
- ".*reflect/value.go",
- ".*encoding/xml/xml.go",
- ".*runtime/pprof/internal/profile/proto.go",
- ".*fmt/scan.go",
- ".*go/types/conversions.go",
- ".*golang.org/x/net/dns/dnsmessage/message.go",
- ),
- ),
- shadow.Analyzer: disableMatches(), // Disabled for now.
- structtag.Analyzer: internalMatches(), // External not subject to rules.
- tests.Analyzer: alwaysMatches(),
- unmarshal.Analyzer: alwaysMatches(),
- unreachable.Analyzer: internalMatches(),
- unsafeptr.Analyzer: and(
- internalMatches(),
- internalExcluded(
- ".*_test.go", // Exclude tests.
- "pkg/flipcall/.*_unsafe.go", // Special case.
- "pkg/gohacks/gohacks_unsafe.go", // Special case.
- "pkg/sentry/fs/fsutil/host_file_mapper_unsafe.go", // Special case.
- "pkg/sentry/platform/kvm/bluepill_unsafe.go", // Special case.
- "pkg/sentry/platform/kvm/machine_unsafe.go", // Special case.
- "pkg/sentry/platform/ring0/pagetables/allocator_unsafe.go", // Special case.
- "pkg/sentry/platform/safecopy/safecopy_unsafe.go", // Special case.
- "pkg/sentry/vfs/mount_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/stub_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/switchto_google_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/sysmsg_thread_unsafe.go", // Special case.
- "pkg/state/decode_unsafe.go", // Special case.
- ),
- ),
- unusedresult.Analyzer: alwaysMatches(),
+ // Global is the global analyzer config.
+ Global AnalyzerConfig `yaml:"global"`
- // Internal analyzers: external packages not subject.
- checkescape.Analyzer: internalMatches(),
- checkunsafe.Analyzer: internalMatches(),
+ // Analyzers are individual analyzer configurations. The
+ // key for each analyzer is the name of the analyzer. The
+ // value is either a boolean (enable/disable), or a map to
+ // the groups above.
+ Analyzers map[AnalyzerName]AnalyzerConfig `yaml:"analyzers"`
}
-func init() {
- staticMatcher := and(
- // Only match internal, non-generated files.
- internalMatches(),
- generatedExcluded(),
+// Merge merges two configurations.
+func (c *Config) Merge(other *Config) {
+ // Merge all groups.
+ for _, g := range other.Groups {
+ // Is there a matching group? If yes, we just delete
+ // it. This will preserve the order provided in the
+ // overriding file, even if it differs.
+ for i := 0; i < len(c.Groups); i++ {
+ if g.Name == c.Groups[i].Name {
+ copy(c.Groups[i:], c.Groups[i+1:])
+ c.Groups = c.Groups[:len(c.Groups)-1]
+ break
+ }
+ }
+ c.Groups = append(c.Groups, g)
+ }
- // We use ALL_CAPS for system definitions,
- // which are common enough in the code base
- // that we shouldn't annotate exceptions.
- //
- // Same story for underscores.
- resultExcluded([]string{
- "should not use ALL_CAPS in Go names",
- "should not use underscores in Go names",
- }),
+ // Merge global configurations.
+ c.Global.merge(other.Global)
- // Exclude existing matches.
- internalExcluded(
- "pkg/abi/linux/fuse.go:22",
- "pkg/abi/linux/fuse.go:25",
- "pkg/abi/linux/socket.go:113",
- "pkg/abi/linux/tty.go:73",
- "pkg/bpf/decoder.go:112",
- "pkg/cpuid/cpuid_x86.go:675",
- "pkg/eventchannel/event.go:193",
- "pkg/eventchannel/event.go:27",
- "pkg/eventchannel/event_test.go:22",
- "pkg/eventchannel/rate.go:19",
- "pkg/gohacks/gohacks_unsafe.go:33",
- "pkg/log/json.go:30",
- "pkg/log/log.go:359",
- "pkg/merkletree/merkletree.go:230",
- "pkg/merkletree/merkletree.go:243",
- "pkg/merkletree/merkletree.go:249",
- "pkg/merkletree/merkletree.go:266",
- "pkg/merkletree/merkletree.go:355",
- "pkg/merkletree/merkletree.go:369",
- "pkg/metric/metric_test.go:20",
- "pkg/p9/p9test/client_test.go:687",
- "pkg/p9/transport_test.go:196",
- "pkg/pool/pool.go:15",
- "pkg/refs/refcounter.go:510",
- "pkg/refs/refcounter_test.go:169",
- "pkg/safemem/block_unsafe.go:89",
- "pkg/seccomp/seccomp.go:82",
- "pkg/segment/test/set_functions.go:15",
- "pkg/sentry/arch/signal.go:166",
- "pkg/sentry/arch/signal.go:171",
- "pkg/sentry/control/pprof.go:196",
- "pkg/sentry/devices/memdev/full.go:58",
- "pkg/sentry/devices/memdev/null.go:59",
- "pkg/sentry/devices/memdev/random.go:68",
- "pkg/sentry/devices/memdev/zero.go:86",
- "pkg/sentry/fdimport/fdimport.go:15",
- "pkg/sentry/fs/attr.go:257",
- "pkg/sentry/fsbridge/fs.go:116",
- "pkg/sentry/fsbridge/vfs.go:124",
- "pkg/sentry/fsbridge/vfs.go:70",
- "pkg/sentry/fs/copy_up.go:365",
- "pkg/sentry/fs/copy_up_test.go:65",
- "pkg/sentry/fs/dev/net_tun.go:161",
- "pkg/sentry/fs/dev/net_tun.go:63",
- "pkg/sentry/fs/dev/null.go:97",
- "pkg/sentry/fs/dirent_cache.go:64",
- "pkg/sentry/fs/file_overlay.go:327",
- "pkg/sentry/fs/file_overlay.go:524",
- "pkg/sentry/fs/filetest/filetest.go:55",
- "pkg/sentry/fs/filetest/filetest.go:60",
- "pkg/sentry/fs/fs.go:77",
- "pkg/sentry/fs/fsutil/file.go:290",
- "pkg/sentry/fs/fsutil/file.go:346",
- "pkg/sentry/fs/fsutil/host_file_mapper.go:105",
- "pkg/sentry/fs/fsutil/inode_cached.go:676",
- "pkg/sentry/fs/fsutil/inode_cached.go:772",
- "pkg/sentry/fs/gofer/attr.go:120",
- "pkg/sentry/fs/gofer/fifo.go:33",
- "pkg/sentry/fs/gofer/inode.go:410",
- "pkg/sentry/fsimpl/devpts/devpts.go:110",
- "pkg/sentry/fsimpl/devpts/devpts.go:246",
- "pkg/sentry/fsimpl/devpts/devpts.go:50",
- "pkg/sentry/fsimpl/devpts/master.go:110",
- "pkg/sentry/fsimpl/devpts/master.go:55",
- "pkg/sentry/fsimpl/devpts/replica.go:113",
- "pkg/sentry/fsimpl/devpts/replica.go:57",
- "pkg/sentry/fsimpl/devtmpfs/devtmpfs.go:54",
- "pkg/sentry/fsimpl/ext/disklayout/superblock_64.go:97",
- "pkg/sentry/fsimpl/ext/disklayout/superblock_old.go:92",
- "pkg/sentry/fsimpl/ext/disklayout/block_group_32.go:44",
- "pkg/sentry/fsimpl/ext/disklayout/inode_new.go:91",
- "pkg/sentry/fsimpl/ext/disklayout/inode_old.go:93",
- "pkg/sentry/fsimpl/ext/disklayout/superblock_32.go:66",
- "pkg/sentry/fsimpl/ext/disklayout/block_group_64.go:53",
- "pkg/sentry/fsimpl/eventfd/eventfd.go:268",
- "pkg/sentry/fsimpl/ext/directory.go:163",
- "pkg/sentry/fsimpl/ext/directory.go:164",
- "pkg/sentry/fsimpl/ext/extent_file.go:142",
- "pkg/sentry/fsimpl/ext/extent_file.go:143",
- "pkg/sentry/fsimpl/ext/ext.go:105",
- "pkg/sentry/fsimpl/ext/filesystem.go:287",
- "pkg/sentry/fsimpl/ext/regular_file.go:153",
- "pkg/sentry/fsimpl/ext/symlink.go:113",
- "pkg/sentry/fsimpl/fuse/connection_control.go:194",
- "pkg/sentry/fsimpl/fuse/dev.go:387",
- "pkg/sentry/fsimpl/fuse/dev_test.go:318",
- "pkg/sentry/fsimpl/fuse/fusefs.go:102",
- "pkg/sentry/fsimpl/fuse/read_write.go:129",
- "pkg/sentry/fsimpl/fuse/request_response.go:71",
- "pkg/sentry/fsimpl/gofer/directory.go:135",
- "pkg/sentry/fsimpl/gofer/filesystem.go:679",
- "pkg/sentry/fsimpl/gofer/gofer.go:1694",
- "pkg/sentry/fsimpl/gofer/gofer.go:276",
- "pkg/sentry/fsimpl/gofer/regular_file.go:81",
- "pkg/sentry/fsimpl/gofer/special_file.go:141",
- "pkg/sentry/fsimpl/host/host.go:184",
- "pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go:50",
- "pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go:90",
- "pkg/sentry/fsimpl/kernfs/fd_impl_util.go:273",
- "pkg/sentry/fsimpl/kernfs/filesystem.go:247",
- "pkg/sentry/fsimpl/kernfs/inode_impl_util.go:320",
- "pkg/sentry/fsimpl/kernfs/inode_impl_util.go:497",
- "pkg/sentry/fsimpl/kernfs/synthetic_directory.go:52",
- "pkg/sentry/fsimpl/overlay/directory.go:119",
- "pkg/sentry/fsimpl/overlay/filesystem.go:527",
- "pkg/sentry/fsimpl/overlay/non_directory.go:152",
- "pkg/sentry/fsimpl/overlay/overlay.go:115",
- "pkg/sentry/fsimpl/overlay/overlay.go:719",
- "pkg/sentry/fsimpl/pipefs/pipefs.go:74",
- "pkg/sentry/fsimpl/proc/filesystem.go:52",
- "pkg/sentry/fsimpl/proc/filesystem.go:81",
- "pkg/sentry/fsimpl/proc/subtasks.go:126",
- "pkg/sentry/fsimpl/proc/subtasks.go:189",
- "pkg/sentry/fsimpl/proc/task_fds.go:168",
- "pkg/sentry/fsimpl/proc/task_fds.go:228",
- "pkg/sentry/fsimpl/proc/task_fds.go:301",
- "pkg/sentry/fsimpl/proc/task_fds.go:318",
- "pkg/sentry/fsimpl/proc/task_fds.go:67",
- "pkg/sentry/fsimpl/proc/task_files.go:112",
- "pkg/sentry/fsimpl/proc/task_files.go:158",
- "pkg/sentry/fsimpl/proc/task_files.go:259",
- "pkg/sentry/fsimpl/proc/task_files.go:285",
- "pkg/sentry/fsimpl/proc/task_files.go:305",
- "pkg/sentry/fsimpl/proc/task_files.go:384",
- "pkg/sentry/fsimpl/proc/task_files.go:403",
- "pkg/sentry/fsimpl/proc/task_files.go:428",
- "pkg/sentry/fsimpl/proc/task_files.go:691",
- "pkg/sentry/fsimpl/proc/task_files.go:770",
- "pkg/sentry/fsimpl/proc/task_files.go:797",
- "pkg/sentry/fsimpl/proc/task_files.go:828",
- "pkg/sentry/fsimpl/proc/task_files.go:879",
- "pkg/sentry/fsimpl/proc/task_files.go:910",
- "pkg/sentry/fsimpl/proc/task_files.go:961",
- "pkg/sentry/fsimpl/proc/task.go:127",
- "pkg/sentry/fsimpl/proc/task.go:193",
- "pkg/sentry/fsimpl/proc/task_net.go:134",
- "pkg/sentry/fsimpl/proc/task_net.go:475",
- "pkg/sentry/fsimpl/proc/task_net.go:491",
- "pkg/sentry/fsimpl/proc/task_net.go:508",
- "pkg/sentry/fsimpl/proc/task_net.go:665",
- "pkg/sentry/fsimpl/proc/task_net.go:715",
- "pkg/sentry/fsimpl/proc/task_net.go:779",
- "pkg/sentry/fsimpl/proc/tasks_files.go:113",
- "pkg/sentry/fsimpl/proc/tasks_files.go:388",
- "pkg/sentry/fsimpl/proc/tasks.go:232",
- "pkg/sentry/fsimpl/proc/tasks_sys.go:145",
- "pkg/sentry/fsimpl/proc/tasks_sys.go:181",
- "pkg/sentry/fsimpl/proc/tasks_sys.go:239",
- "pkg/sentry/fsimpl/proc/tasks_sys.go:291",
- "pkg/sentry/fsimpl/proc/tasks_sys.go:375",
- "pkg/sentry/fsimpl/signalfd/signalfd.go:124",
- "pkg/sentry/fsimpl/signalfd/signalfd.go:15",
- "pkg/sentry/fsimpl/signalfd/signalfd.go:126",
- "pkg/sentry/fsimpl/sockfs/sockfs.go:36",
- "pkg/sentry/fsimpl/sockfs/sockfs.go:79",
- "pkg/sentry/fsimpl/sys/kcov.go:49",
- "pkg/sentry/fsimpl/sys/kcov.go:99",
- "pkg/sentry/fsimpl/sys/sys.go:118",
- "pkg/sentry/fsimpl/sys/sys.go:56",
- "pkg/sentry/fsimpl/testutil/testutil.go:257",
- "pkg/sentry/fsimpl/testutil/testutil.go:260",
- "pkg/sentry/fsimpl/timerfd/timerfd.go:87",
- "pkg/sentry/fsimpl/tmpfs/directory.go:112",
- "pkg/sentry/fsimpl/tmpfs/filesystem.go:195",
- "pkg/sentry/fsimpl/tmpfs/regular_file.go:226",
- "pkg/sentry/fsimpl/tmpfs/regular_file.go:346",
- "pkg/sentry/fsimpl/tmpfs/tmpfs.go:103",
- "pkg/sentry/fsimpl/tmpfs/tmpfs.go:733",
- "pkg/sentry/fsimpl/verity/filesystem.go:490",
- "pkg/sentry/fsimpl/verity/verity.go:156",
- "pkg/sentry/fsimpl/verity/verity.go:629",
- "pkg/sentry/fsimpl/verity/verity.go:672",
- "pkg/sentry/fs/mount.go:162",
- "pkg/sentry/fs/mount.go:256",
- "pkg/sentry/fs/mount_overlay.go:144",
- "pkg/sentry/fs/mounts.go:432",
- "pkg/sentry/fs/proc/exec_args.go:104",
- "pkg/sentry/fs/proc/exec_args.go:73",
- "pkg/sentry/fs/proc/fds.go:269",
- "pkg/sentry/fs/proc/loadavg.go:33",
- "pkg/sentry/fs/proc/meminfo.go:39",
- "pkg/sentry/fs/proc/mounts.go:193",
- "pkg/sentry/fs/proc/mounts.go:84",
- "pkg/sentry/fs/proc/net.go:125",
- "pkg/sentry/fs/proc/proc.go:146",
- "pkg/sentry/fs/proc/proc.go:204",
- "pkg/sentry/fs/proc/seqfile/seqfile.go:210",
- "pkg/sentry/fs/proc/sys.go:146",
- "pkg/sentry/fs/proc/sys.go:43",
- "pkg/sentry/fs/proc/sys_net.go:113",
- "pkg/sentry/fs/proc/sys_net.go:205",
- "pkg/sentry/fs/proc/sys_net.go:233",
- "pkg/sentry/fs/proc/sys_net.go:307",
- "pkg/sentry/fs/proc/sys_net.go:335",
- "pkg/sentry/fs/proc/sys_net.go:446",
- "pkg/sentry/fs/proc/sys_net.go:456",
- "pkg/sentry/fs/proc/sys_net.go:89",
- "pkg/sentry/fs/proc/task.go:170",
- "pkg/sentry/fs/proc/task.go:322",
- "pkg/sentry/fs/proc/task.go:427",
- "pkg/sentry/fs/proc/task.go:467",
- "pkg/sentry/fs/proc/task.go:500",
- "pkg/sentry/fs/proc/task.go:784",
- "pkg/sentry/fs/proc/task.go:839",
- "pkg/sentry/fs/proc/task.go:920",
- "pkg/sentry/fs/proc/uid_gid_map.go:108",
- "pkg/sentry/fs/proc/uid_gid_map.go:79",
- "pkg/sentry/fs/proc/uptime.go:75",
- "pkg/sentry/fs/ramfs/dir.go:447",
- "pkg/sentry/fs/tmpfs/inode_file.go:436",
- "pkg/sentry/fs/tmpfs/inode_file.go:537",
- "pkg/sentry/fs/tty/dir.go:313",
- "pkg/sentry/fs/tty/master.go:131",
- "pkg/sentry/fs/tty/master.go:91",
- "pkg/sentry/fs/tty/replica.go:116",
- "pkg/sentry/fs/tty/replica.go:88",
- "pkg/sentry/kernel/auth/id_map.go:269",
- "pkg/sentry/kernel/fasync/fasync.go:67",
- "pkg/sentry/kernel/kcov.go:209",
- "pkg/sentry/kernel/kcov.go:223",
- "pkg/sentry/kernel/kernel.go:343",
- "pkg/sentry/kernel/kernel.go:368",
- "pkg/sentry/kernel/pipe/node_test.go:112",
- "pkg/sentry/kernel/pipe/node_test.go:119",
- "pkg/sentry/kernel/pipe/node_test.go:130",
- "pkg/sentry/kernel/pipe/node_test.go:137",
- "pkg/sentry/kernel/pipe/node_test.go:149",
- "pkg/sentry/kernel/pipe/node_test.go:150",
- "pkg/sentry/kernel/pipe/node_test.go:158",
- "pkg/sentry/kernel/pipe/node_test.go:174",
- "pkg/sentry/kernel/pipe/node_test.go:180",
- "pkg/sentry/kernel/pipe/node_test.go:193",
- "pkg/sentry/kernel/pipe/node_test.go:202",
- "pkg/sentry/kernel/pipe/node_test.go:205",
- "pkg/sentry/kernel/pipe/node_test.go:216",
- "pkg/sentry/kernel/pipe/node_test.go:219",
- "pkg/sentry/kernel/pipe/node_test.go:271",
- "pkg/sentry/kernel/pipe/node_test.go:290",
- "pkg/sentry/kernel/pipe/pipe_test.go:93",
- "pkg/sentry/kernel/pipe/reader_writer.go:65",
- "pkg/sentry/kernel/posixtimer.go:157",
- "pkg/sentry/kernel/ptrace.go:218",
- "pkg/sentry/kernel/semaphore/semaphore.go:323",
- "pkg/sentry/kernel/sessions.go:123",
- "pkg/sentry/kernel/sessions.go:508",
- "pkg/sentry/kernel/signal_handlers.go:57",
- "pkg/sentry/kernel/task_context.go:72",
- "pkg/sentry/kernel/task_exit.go:67",
- "pkg/sentry/kernel/task_sched.go:255",
- "pkg/sentry/kernel/task_sched.go:280",
- "pkg/sentry/kernel/task_sched.go:323",
- "pkg/sentry/kernel/task_stop.go:192",
- "pkg/sentry/kernel/thread_group.go:530",
- "pkg/sentry/kernel/timekeeper.go:316",
- "pkg/sentry/kernel/vdso.go:106",
- "pkg/sentry/kernel/vdso.go:118",
- "pkg/sentry/memmap/memmap.go:103",
- "pkg/sentry/memmap/memmap.go:163",
- "pkg/sentry/mm/address_space.go:42",
- "pkg/sentry/mm/address_space.go:42",
- "pkg/sentry/mm/aio_context.go:208",
- "pkg/sentry/mm/aio_context.go:288",
- "pkg/sentry/mm/pma.go:683",
- "pkg/sentry/mm/special_mappable.go:80",
- "pkg/sentry/platform/systrap/subprocess.go:370",
- "pkg/sentry/platform/systrap/usertrap/usertrap_amd64.go:124",
- "pkg/sentry/syscalls/linux/sys_sem.go:62",
- "pkg/sentry/syscalls/linux/sys_time.go:189",
- "pkg/sentry/usage/cpu.go:42",
- "pkg/sentry/vfs/anonfs.go:302",
- "pkg/sentry/vfs/anonfs.go:99",
- "pkg/sentry/vfs/dentry.go:214",
- "pkg/sentry/vfs/epoll.go:168",
- "pkg/sentry/vfs/epoll.go:314",
- "pkg/sentry/vfs/file_description.go:549",
- "pkg/sentry/vfs/file_description_impl_util.go:304",
- "pkg/sentry/vfs/file_description_impl_util.go:412",
- "pkg/sentry/vfs/filesystem.go:76",
- "pkg/sentry/vfs/lock.go:15",
- "pkg/sentry/vfs/lock.go:47",
- "pkg/sentry/vfs/memxattr/xattr.go:37",
- "pkg/sentry/vfs/mount.go:510",
- "pkg/sentry/vfs/mount.go:667",
- "pkg/sentry/vfs/mount_test.go:106",
- "pkg/sentry/vfs/mount_test.go:160",
- "pkg/sentry/vfs/mount_test.go:215",
- "pkg/sentry/vfs/mount_unsafe.go:153",
- "pkg/sentry/vfs/resolving_path.go:228",
- "pkg/sentry/vfs/vfs.go:897",
- "pkg/shim/runsc/runsc.go:16",
- "pkg/shim/runsc/utils.go:16",
- "pkg/shim/v1/proc/deleted_state.go:16",
- "pkg/shim/v1/proc/exec.go:16",
- "pkg/shim/v1/proc/exec_state.go:16",
- "pkg/shim/v1/proc/init.go:16",
- "pkg/shim/v1/proc/init_state.go:16",
- "pkg/shim/v1/proc/io.go:16",
- "pkg/shim/v1/proc/process.go:16",
- "pkg/shim/v1/proc/types.go:16",
- "pkg/shim/v1/proc/utils.go:16",
- "pkg/shim/v1/shim/api.go:16",
- "pkg/shim/v1/shim/platform.go:16",
- "pkg/shim/v1/shim/service.go:16",
- "pkg/shim/v1/utils/annotations.go:15",
- "pkg/shim/v1/utils/utils.go:15",
- "pkg/shim/v1/utils/volumes.go:15",
- "pkg/shim/v2/api.go:16",
- "pkg/shim/v2/epoll.go:18",
- "pkg/shim/v2/options/options.go:15",
- "pkg/shim/v2/options/options.go:24",
- "pkg/shim/v2/options/options.go:26",
- "pkg/shim/v2/runtimeoptions/runtimeoptions.go:16",
- "pkg/shim/v2/runtimeoptions/runtimeoptions_cri.go", // Generated: exempt all.
- "pkg/shim/v2/runtimeoptions/runtimeoptions_test.go:22",
- "pkg/shim/v2/service.go:15",
- "pkg/shim/v2/service_linux.go:18",
- "pkg/state/tests/integer_test.go:23",
- "pkg/state/tests/integer_test.go:28",
- "pkg/sync/rwmutex_test.go:105",
- "pkg/syserr/host_linux.go:35",
- "pkg/unet/unet_test.go:634",
- "pkg/unet/unet_test.go:662",
- "pkg/unet/unet_test.go:703",
- "pkg/unet/unet_test.go:98",
- "pkg/usermem/addr.go:34",
- "pkg/usermem/usermem.go:171",
- "pkg/usermem/usermem.go:170",
- "runsc/boot/compat.go:22",
- "runsc/boot/compat.go:56",
- "runsc/boot/loader.go:1115",
- "runsc/boot/loader.go:1120",
- "runsc/cmd/checkpoint.go:151",
- "runsc/config/flags.go:32",
- "runsc/container/container.go:641",
- "runsc/container/container.go:988",
- "runsc/specutils/specutils.go:172",
- "runsc/specutils/specutils.go:428",
- "runsc/specutils/specutils.go:436",
- "runsc/specutils/specutils.go:442",
- "runsc/specutils/specutils.go:447",
- "runsc/specutils/specutils.go:454",
- "test/cmd/test_app/fds.go:171",
- "test/iptables/filter_output.go:251",
- "test/packetimpact/testbench/connections.go:77",
- "tools/bigquery/bigquery.go:106",
- "tools/checkescape/test1/test1.go:108",
- "tools/checkescape/test1/test1.go:122",
- "tools/checkescape/test1/test1.go:137",
- "tools/checkescape/test1/test1.go:151",
- "tools/checkescape/test1/test1.go:170",
- "tools/checkescape/test1/test1.go:39",
- "tools/checkescape/test1/test1.go:45",
- "tools/checkescape/test1/test1.go:50",
- "tools/checkescape/test1/test1.go:64",
- "tools/checkescape/test1/test1.go:80",
- "tools/checkescape/test1/test1.go:94",
- "tools/go_generics/imports.go:51",
- "tools/go_generics/imports.go:75",
- "tools/go_marshal/gomarshal/generator.go:177",
- "tools/go_marshal/gomarshal/generator.go:81",
- "tools/go_marshal/gomarshal/generator.go:85",
- "tools/go_marshal/test/escape/escape.go:15",
- "tools/go_marshal/test/test.go:164",
- ),
- )
+ // Merge all analyzer configurations.
+ for name, ac := range other.Analyzers {
+ old, ok := c.Analyzers[name]
+ if !ok {
+ c.Analyzers[name] = ac // No analyzer in original config.
+ continue
+ }
+ old.merge(ac)
+ }
+}
- // Add all staticcheck analyzers; internal only.
- for _, a := range staticcheck.Analyzers {
- analyzerConfig[a] = staticMatcher
+// Compile compiles a configuration to make it useable.
+func (c *Config) Compile() error {
+ for i := 0; i < len(c.Groups); i++ {
+ if err := c.Groups[i].compile(); err != nil {
+ return fmt.Errorf("invalid group %q: %w", c.Groups[i].Name, err)
+ }
}
- // Add all stylecheck analyzers; internal only.
- for _, a := range stylecheck.Analyzers {
- analyzerConfig[a] = staticMatcher
+ if err := c.Global.compile(); err != nil {
+ return fmt.Errorf("invalid global: %w", err)
}
+ for name, ac := range c.Analyzers {
+ if err := ac.compile(); err != nil {
+ return fmt.Errorf("invalid analyzer %q: %w", name, err)
+ }
+ }
+ return nil
}
-var escapesConfig = map[*analysis.Analyzer]matcher{
- // Informational only: include all packages.
- checkescape.EscapeAnalyzer: alwaysMatches(),
+// ShouldReport returns true iff the finding should match the Config.
+func (c *Config) ShouldReport(finding Finding) bool {
+ fullPos := finding.Position.String()
+
+ // Find the matching group.
+ var groupConfig *Group
+ for i := 0; i < len(c.Groups); i++ {
+ if c.Groups[i].regex.MatchString(fullPos) {
+ groupConfig = &c.Groups[i]
+ break
+ }
+ }
+
+ // If there is no group matching this path, then
+ // we default to accept the finding.
+ if groupConfig == nil {
+ return true
+ }
+
+ // Suppress via global rule?
+ if !c.Global.shouldReport(groupConfig, fullPos, finding.Message) {
+ return false
+ }
+
+ // Try the analyzer config.
+ ac, ok := c.Analyzers[finding.Category]
+ if !ok {
+ return groupConfig.Default
+ }
+ return ac.shouldReport(groupConfig, fullPos, finding.Message)
}
diff --git a/tools/nogo/defs.bzl b/tools/nogo/defs.bzl
index 543598b52..b3d297308 100644
--- a/tools/nogo/defs.bzl
+++ b/tools/nogo/defs.bzl
@@ -2,6 +2,28 @@
load("//tools/bazeldefs:go.bzl", "go_context", "go_importpath", "go_rule", "go_test_library")
+NogoConfigInfo = provider(
+ "information about a nogo configuration",
+ fields = {
+ "srcs": "the collection of configuration files",
+ },
+)
+
+def _nogo_config_impl(ctx):
+ return [NogoConfigInfo(
+ srcs = ctx.files.srcs,
+ )]
+
+nogo_config = rule(
+ implementation = _nogo_config_impl,
+ attrs = {
+ "srcs": attr.label_list(
+ doc = "a list of yaml files (schema defined by tool/nogo/config.go).",
+ allow_files = True,
+ ),
+ },
+)
+
NogoTargetInfo = provider(
"information about the Go target",
fields = {
@@ -20,11 +42,14 @@ nogo_target = go_rule(
rule,
implementation = _nogo_target_impl,
attrs = {
- # goarch is the build architecture. This will normally be provided by a
- # select statement, but this information is propagated to other rules.
- "goarch": attr.string(mandatory = True),
- # goos is similarly the build operating system target.
- "goos": attr.string(mandatory = True),
+ "goarch": attr.string(
+ doc = "the Go build architecture (propagated to other rules).",
+ mandatory = True,
+ ),
+ "goos": attr.string(
+ doc = "the Go OS target (propagated to other rules).",
+ mandatory = True,
+ ),
},
)
@@ -81,7 +106,7 @@ NogoStdlibInfo = provider(
"information for nogo analysis (standard library facts)",
fields = {
"facts": "serialized standard library facts",
- "findings": "package findings (if relevant)",
+ "raw_findings": "raw package findings (if relevant)",
},
)
@@ -90,7 +115,7 @@ def _nogo_stdlib_impl(ctx):
nogo_target_info = ctx.attr._nogo_target[NogoTargetInfo]
go_ctx = go_context(ctx, goos = nogo_target_info.goos, goarch = nogo_target_info.goarch)
facts = ctx.actions.declare_file(ctx.label.name + ".facts")
- findings = ctx.actions.declare_file(ctx.label.name + ".findings")
+ raw_findings = ctx.actions.declare_file(ctx.label.name + ".raw_findings")
config = struct(
Srcs = [f.path for f in go_ctx.stdlib_srcs],
GOOS = go_ctx.goos,
@@ -101,15 +126,15 @@ def _nogo_stdlib_impl(ctx):
ctx.actions.write(config_file, config.to_json())
ctx.actions.run(
inputs = [config_file] + go_ctx.stdlib_srcs,
- outputs = [facts, findings],
+ outputs = [facts, raw_findings],
tools = depset(go_ctx.runfiles.to_list() + ctx.files._nogo_objdump_tool),
executable = ctx.files._nogo_check[0],
- mnemonic = "GoStandardLibraryAnalysis",
+ mnemonic = "NogoStandardLibraryAnalysis",
progress_message = "Analyzing Go Standard Library",
arguments = go_ctx.nogo_args + [
"-objdump_tool=%s" % ctx.files._nogo_objdump_tool[0].path,
"-stdlib=%s" % config_file.path,
- "-findings=%s" % findings.path,
+ "-findings=%s" % raw_findings.path,
"-facts=%s" % facts.path,
],
)
@@ -117,7 +142,7 @@ def _nogo_stdlib_impl(ctx):
# Return the stdlib facts as output.
return [NogoStdlibInfo(
facts = facts,
- findings = findings,
+ raw_findings = raw_findings,
)]
nogo_stdlib = go_rule(
@@ -148,7 +173,8 @@ NogoInfo = provider(
"information for nogo analysis",
fields = {
"facts": "serialized package facts",
- "findings": "package findings (if relevant)",
+ "raw_findings": "raw package findings (if relevant)",
+ "escapes": "escape-only findings (if relevant)",
"importpath": "package import path",
"binaries": "package binary files",
"srcs": "srcs (for go_test support)",
@@ -214,6 +240,7 @@ def _nogo_aspect_impl(target, ctx):
# Collect all info from shadow dependencies.
fact_map = dict()
import_map = dict()
+ all_raw_findings = []
for dep in deps:
# There will be no file attribute set for all transitive dependencies
# that are not go_library or go_binary rules, such as a proto rules.
@@ -231,6 +258,9 @@ def _nogo_aspect_impl(target, ctx):
import_map[info.importpath] = x_files[0]
fact_map[info.importpath] = info.facts.path
+ # Collect all findings; duplicates are resolved at the end.
+ all_raw_findings.extend(info.raw_findings)
+
# Ensure the above are available as inputs.
inputs.append(info.facts)
inputs += info.binaries
@@ -244,7 +274,7 @@ def _nogo_aspect_impl(target, ctx):
nogo_target_info = ctx.attr._nogo_target[NogoTargetInfo]
go_ctx = go_context(ctx, goos = nogo_target_info.goos, goarch = nogo_target_info.goarch)
facts = ctx.actions.declare_file(target.label.name + ".facts")
- findings = ctx.actions.declare_file(target.label.name + ".findings")
+ raw_findings = ctx.actions.declare_file(target.label.name + ".raw_findings")
escapes = ctx.actions.declare_file(target.label.name + ".escapes")
config = struct(
ImportPath = importpath,
@@ -262,39 +292,39 @@ def _nogo_aspect_impl(target, ctx):
inputs.append(config_file)
ctx.actions.run(
inputs = inputs,
- outputs = [facts, findings, escapes],
+ outputs = [facts, raw_findings, escapes],
tools = depset(go_ctx.runfiles.to_list() + ctx.files._nogo_objdump_tool),
executable = ctx.files._nogo_check[0],
- mnemonic = "GoStaticAnalysis",
+ mnemonic = "NogoAnalysis",
progress_message = "Analyzing %s" % target.label,
arguments = go_ctx.nogo_args + [
"-binary=%s" % target_objfile.path,
"-objdump_tool=%s" % ctx.files._nogo_objdump_tool[0].path,
"-package=%s" % config_file.path,
- "-findings=%s" % findings.path,
+ "-findings=%s" % raw_findings.path,
"-facts=%s" % facts.path,
"-escapes=%s" % escapes.path,
],
)
+ # Flatten all findings from all dependencies.
+ #
+ # This is done because all the filtering must be done at the
+ # top-level nogo_test to dynamically apply a configuration.
+ # This does not actually add any additional work here, but
+ # will simply propagate the full list of files.
+ all_raw_findings = [stdlib_info.raw_findings] + depset(all_raw_findings).to_list() + [raw_findings]
+
# Return the package facts as output.
- return [
- NogoInfo(
- facts = facts,
- findings = findings,
- importpath = importpath,
- binaries = binaries,
- srcs = srcs,
- deps = deps,
- ),
- OutputGroupInfo(
- # Expose all findings (should just be a single file). This can be
- # used for build analysis of the nogo findings.
- nogo_findings = depset([findings]),
- # Expose all escape analysis findings (see above).
- nogo_escapes = depset([escapes]),
- ),
- ]
+ return [NogoInfo(
+ facts = facts,
+ raw_findings = all_raw_findings,
+ escapes = escapes,
+ importpath = importpath,
+ binaries = binaries,
+ srcs = srcs,
+ deps = deps,
+ )]
nogo_aspect = go_rule(
aspect,
@@ -327,41 +357,72 @@ nogo_aspect = go_rule(
def _nogo_test_impl(ctx):
"""Check nogo findings."""
- # Build a runner that checks the facts files.
- findings = [dep[NogoInfo].findings for dep in ctx.attr.deps]
- runner = ctx.actions.declare_file(ctx.label.name)
+ # Ensure there's a single dependency.
+ if len(ctx.attr.deps) != 1:
+ fail("nogo_test requires exactly one dep.")
+ raw_findings = ctx.attr.deps[0][NogoInfo].raw_findings
+ escapes = ctx.attr.deps[0][NogoInfo].escapes
+
+ # Build a step that applies the configuration.
+ config_srcs = ctx.attr.config[NogoConfigInfo].srcs
+ findings = ctx.actions.declare_file(ctx.label.name + ".findings")
ctx.actions.run(
- inputs = findings + ctx.files.srcs,
- outputs = [runner],
- tools = depset(ctx.files._gentest),
- executable = ctx.files._gentest[0],
- mnemonic = "Gentest",
+ inputs = raw_findings + ctx.files.srcs + config_srcs,
+ outputs = [findings],
+ tools = depset(ctx.files._filter),
+ executable = ctx.files._filter[0],
+ mnemonic = "GoStaticAnalysis",
progress_message = "Generating %s" % ctx.label,
- arguments = [runner.path] + [f.path for f in findings],
+ arguments = ["-input=%s" % f.path for f in raw_findings] +
+ ["-config=%s" % f.path for f in config_srcs] +
+ ["-output=%s" % findings.path],
)
+
+ # Build a runner that checks the filtered facts.
+ #
+ # Note that this calls the filter binary without any configuration, so all
+ # findings will be included. But this is expected, since we've already
+ # filtered out everything that should not be included.
+ runner = ctx.actions.declare_file(ctx.label.name)
+ runner_content = [
+ "#!/bin/bash",
+ "exec %s -input=%s" % (ctx.files._filter[0].short_path, findings.short_path),
+ "",
+ ]
+ ctx.actions.write(runner, "\n".join(runner_content), is_executable = True)
+
return [DefaultInfo(
+ # The runner just executes the filter again, on the
+ # newly generated filtered findings. We still need
+ # the filter tool as part of our runfiles, however.
+ runfiles = ctx.runfiles(files = ctx.files._filter + [findings]),
executable = runner,
+ ), OutputGroupInfo(
+ # Propagate the filtered filters, for consumption by
+ # build tooling. Note that the build tooling typically
+ # pays attention to the mnemoic above, so this must be
+ # what is expected by the tooling.
+ nogo_findings = depset([findings]),
+ # Expose all escape analysis findings (see above).
+ nogo_escapes = depset([escapes]),
)]
-_nogo_test = rule(
+nogo_test = rule(
implementation = _nogo_test_impl,
attrs = {
- # deps should have only a single element.
- "deps": attr.label_list(aspects = [nogo_aspect]),
- # srcs exist here only to ensure that this target is
- # directly affected by changes to the source files.
- "srcs": attr.label_list(allow_files = True),
- "_gentest": attr.label(default = "//tools/nogo:gentest"),
+ "config": attr.label(
+ mandatory = True,
+ doc = "A rule of kind nogo_config.",
+ ),
+ "deps": attr.label_list(
+ aspects = [nogo_aspect],
+ doc = "Exactly one Go dependency to be analyzed.",
+ ),
+ "srcs": attr.label_list(
+ allow_files = True,
+ doc = "Relevant src files. This is ignored except to make the nogo_test directly affected by the files.",
+ ),
+ "_filter": attr.label(default = "//tools/nogo/filter:filter"),
},
test = True,
)
-
-def nogo_test(name, srcs, library, **kwargs):
- tags = kwargs.pop("tags", []) + ["nogo"]
- _nogo_test(
- name = name,
- srcs = srcs,
- deps = [library],
- tags = tags,
- **kwargs
- )
diff --git a/tools/nogo/filter/BUILD b/tools/nogo/filter/BUILD
new file mode 100644
index 000000000..e56a783e2
--- /dev/null
+++ b/tools/nogo/filter/BUILD
@@ -0,0 +1,14 @@
+load("//tools:defs.bzl", "go_binary")
+
+package(licenses = ["notice"])
+
+go_binary(
+ name = "filter",
+ srcs = ["main.go"],
+ nogo = False,
+ visibility = ["//visibility:public"],
+ deps = [
+ "//tools/nogo",
+ "@in_gopkg_yaml_v2//:go_default_library",
+ ],
+)
diff --git a/tools/nogo/filter/main.go b/tools/nogo/filter/main.go
new file mode 100644
index 000000000..9cf41b3b0
--- /dev/null
+++ b/tools/nogo/filter/main.go
@@ -0,0 +1,131 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Binary check is the nogo entrypoint.
+package main
+
+import (
+ "flag"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+ "strings"
+
+ yaml "gopkg.in/yaml.v2"
+ "gvisor.dev/gvisor/tools/nogo"
+)
+
+type stringList []string
+
+func (s *stringList) String() string {
+ return strings.Join(*s, ",")
+}
+
+func (s *stringList) Set(value string) error {
+ *s = append(*s, value)
+ return nil
+}
+
+var (
+ inputFiles stringList
+ configFiles stringList
+ outputFile string
+ showConfig bool
+)
+
+func init() {
+ flag.Var(&inputFiles, "input", "findings input files")
+ flag.StringVar(&outputFile, "output", "", "findings output file")
+ flag.Var(&configFiles, "config", "findings configuration files")
+ flag.BoolVar(&showConfig, "show-config", false, "dump configuration only")
+}
+
+func main() {
+ flag.Parse()
+
+ // Load all available findings.
+ var findings []nogo.Finding
+ for _, filename := range inputFiles {
+ inputFindings, err := nogo.ExtractFindingsFromFile(filename)
+ if err != nil {
+ log.Fatalf("unable to extract findings from %s: %v", filename, err)
+ }
+ findings = append(findings, inputFindings...)
+ }
+
+ // Open and merge all configuations.
+ config := &nogo.Config{
+ Global: make(nogo.AnalyzerConfig),
+ Analyzers: make(map[nogo.AnalyzerName]nogo.AnalyzerConfig),
+ }
+ for _, filename := range configFiles {
+ content, err := ioutil.ReadFile(filename)
+ if err != nil {
+ log.Fatalf("unable to read %s: %v", filename, err)
+ }
+ var newConfig nogo.Config // For current file.
+ if err := yaml.Unmarshal(content, &newConfig); err != nil {
+ log.Fatalf("unable to decode %s: %v", filename, err)
+ }
+ config.Merge(&newConfig)
+ if showConfig {
+ bytes, err := yaml.Marshal(&newConfig)
+ if err != nil {
+ log.Fatalf("error marshalling config: %v", err)
+ }
+ mergedBytes, err := yaml.Marshal(config)
+ if err != nil {
+ log.Fatalf("error marshalling config: %v", err)
+ }
+ fmt.Fprintf(os.Stdout, "Loaded configuration from %s:\n%s\n", filename, string(bytes))
+ fmt.Fprintf(os.Stdout, "Merged configuration:\n%s\n", string(mergedBytes))
+ }
+ }
+ if err := config.Compile(); err != nil {
+ log.Fatalf("error compiling config: %v", err)
+ }
+ if showConfig {
+ os.Exit(0)
+ }
+
+ // Filter the findings (and aggregate by group).
+ filteredFindings := make([]nogo.Finding, 0, len(findings))
+ for _, finding := range findings {
+ if ok := config.ShouldReport(finding); ok {
+ filteredFindings = append(filteredFindings, finding)
+ }
+ }
+
+ // Write the output (if required).
+ //
+ // If the outputFile is specified, then we exit here. Otherwise,
+ // we continue to write to stdout and treat like a test.
+ if outputFile != "" {
+ if err := nogo.WriteFindingsToFile(filteredFindings, outputFile); err != nil {
+ log.Fatalf("unable to write findings: %v", err)
+ }
+ return
+ }
+
+ // Treat the run as a test.
+ if len(filteredFindings) == 0 {
+ fmt.Fprintf(os.Stdout, "PASS\n")
+ os.Exit(0)
+ }
+ for _, finding := range filteredFindings {
+ fmt.Fprintf(os.Stdout, "%s\n", finding.String())
+ }
+ os.Exit(1)
+}
diff --git a/tools/nogo/findings.go b/tools/nogo/findings.go
new file mode 100644
index 000000000..5bd850269
--- /dev/null
+++ b/tools/nogo/findings.go
@@ -0,0 +1,63 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package nogo
+
+import (
+ "encoding/json"
+ "fmt"
+ "go/token"
+ "io/ioutil"
+)
+
+// Finding is a single finding.
+type Finding struct {
+ Category AnalyzerName
+ Position token.Position
+ Message string
+}
+
+// String implements fmt.Stringer.String.
+func (f *Finding) String() string {
+ return fmt.Sprintf("%s: %s: %s", f.Category, f.Position.String(), f.Message)
+}
+
+// WriteFindingsToFile writes findings to a file.
+func WriteFindingsToFile(findings []Finding, filename string) error {
+ content, err := WriteFindingsToBytes(findings)
+ if err != nil {
+ return err
+ }
+ return ioutil.WriteFile(filename, content, 0644)
+}
+
+// WriteFindingsToBytes serializes findings as bytes.
+func WriteFindingsToBytes(findings []Finding) ([]byte, error) {
+ return json.Marshal(findings)
+}
+
+// ExtractFindingsFromFile loads findings from a file.
+func ExtractFindingsFromFile(filename string) ([]Finding, error) {
+ content, err := ioutil.ReadFile(filename)
+ if err != nil {
+ return nil, err
+ }
+ return ExtractFindingsFromBytes(content)
+}
+
+// ExtractFindingsFromBytes loads findings from bytes.
+func ExtractFindingsFromBytes(content []byte) (findings []Finding, err error) {
+ err = json.Unmarshal(content, &findings)
+ return findings, err
+}
diff --git a/tools/nogo/gentest.sh b/tools/nogo/gentest.sh
deleted file mode 100755
index 0a762f9f6..000000000
--- a/tools/nogo/gentest.sh
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/bin/bash
-# Copyright 2019 The gVisor Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -euo pipefail
-
-if [[ "$#" -lt 2 ]]; then
- echo "usage: $0 <output> <findings...>"
- exit 2
-fi
-declare violations=0
-declare output=$1
-shift
-
-# Start the script.
-echo "#!/bin/sh" > "${output}"
-
-# Read a list of findings files.
-declare filename
-declare line
-for filename in "$@"; do
- if [[ -z "${filename}" ]]; then
- continue
- fi
- while read -r line; do
- line="${line@Q}"
- violations=$((${violations}+1));
- echo "echo -e '\\033[0;31m${line}\\033[0;31m\\033[0m'" >> "${output}"
- done < "${filename}"
-done
-
-# Show violations.
-if [[ "${violations}" -eq 0 ]]; then
- echo "echo -e '\\033[0;32mPASS\\033[0;31m\\033[0m'" >> "${output}"
-else
- echo "exit 1" >> "${output}"
-fi
diff --git a/tools/nogo/matchers.go b/tools/nogo/matchers.go
deleted file mode 100644
index b7b73fa27..000000000
--- a/tools/nogo/matchers.go
+++ /dev/null
@@ -1,172 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "go/token"
- "regexp"
- "strings"
-
- "golang.org/x/tools/go/analysis"
-)
-
-type matcher interface {
- ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool
-}
-
-// pathRegexps filters explicit paths.
-type pathRegexps struct {
- expr []*regexp.Regexp
-
- // include, if true, indicates that paths matching any regexp in expr
- // match.
- //
- // If false, paths matching no regexps in expr match.
- include bool
-}
-
-// buildRegexps builds a list of regular expressions.
-//
-// This will panic on error.
-func buildRegexps(prefix string, args ...string) []*regexp.Regexp {
- result := make([]*regexp.Regexp, 0, len(args))
- for _, arg := range args {
- result = append(result, regexp.MustCompile(prefix+arg))
- }
- return result
-}
-
-// notPath works around the lack of backtracking.
-//
-// It is used to construct a regular expression for non-matching components.
-func notPath(name string) string {
- sb := strings.Builder{}
- sb.WriteString("(")
- for i := range name {
- if i > 0 {
- sb.WriteString("|")
- }
- sb.WriteString(name[:i])
- sb.WriteString("[^")
- sb.WriteByte(name[i])
- sb.WriteString("/][^/]*")
- }
- sb.WriteString(")")
- return sb.String()
-}
-
-// ShouldReport implements matcher.ShouldReport.
-func (p *pathRegexps) ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool {
- fullPos := fs.Position(d.Pos).String()
- for _, path := range p.expr {
- if path.MatchString(fullPos) {
- return p.include
- }
- }
- return !p.include
-}
-
-// internalExcluded excludes specific internal paths.
-func internalExcluded(paths ...string) *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(internalPrefix, paths...),
- include: false,
- }
-}
-
-// excludedExcluded excludes specific external paths.
-func externalExcluded(paths ...string) *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(externalPrefix, paths...),
- include: false,
- }
-}
-
-// internalMatches returns a path matcher for internal packages.
-func internalMatches() *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(internalPrefix, internalDefault),
- include: true,
- }
-}
-
-// generatedExcluded excludes all generated code.
-func generatedExcluded() *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(generatedPrefix, ".*"),
- include: false,
- }
-}
-
-// resultExcluded excludes explicit message contents.
-type resultExcluded []string
-
-// ShouldReport implements matcher.ShouldReport.
-func (r resultExcluded) ShouldReport(d analysis.Diagnostic, _ *token.FileSet) bool {
- for _, str := range r {
- if strings.Contains(d.Message, str) {
- return false
- }
- }
- return true // Not excluded.
-}
-
-// andMatcher is a composite matcher.
-type andMatcher struct {
- all []matcher
-}
-
-// ShouldReport implements matcher.ShouldReport.
-func (a *andMatcher) ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool {
- for _, m := range a.all {
- if !m.ShouldReport(d, fs) {
- return false
- }
- }
- return true
-}
-
-// and is a syntactic convension for andMatcher.
-func and(ms ...matcher) *andMatcher {
- return &andMatcher{
- all: ms,
- }
-}
-
-// anyMatcher matches everything.
-type anyMatcher struct{}
-
-// ShouldReport implements matcher.ShouldReport.
-func (anyMatcher) ShouldReport(analysis.Diagnostic, *token.FileSet) bool {
- return true
-}
-
-// alwaysMatches returns an anyMatcher instance.
-func alwaysMatches() anyMatcher {
- return anyMatcher{}
-}
-
-// neverMatcher will never match.
-type neverMatcher struct{}
-
-// ShouldReport implements matcher.ShouldReport.
-func (neverMatcher) ShouldReport(analysis.Diagnostic, *token.FileSet) bool {
- return false
-}
-
-// disableMatches returns a neverMatcher instance.
-func disableMatches() neverMatcher {
- return neverMatcher{}
-}
diff --git a/tools/nogo/nogo.go b/tools/nogo/nogo.go
index e19e3c237..779d4d6d8 100644
--- a/tools/nogo/nogo.go
+++ b/tools/nogo/nogo.go
@@ -21,7 +21,6 @@ package nogo
import (
"encoding/json"
"errors"
- "flag"
"fmt"
"go/ast"
"go/build"
@@ -45,20 +44,20 @@ import (
"gvisor.dev/gvisor/tools/checkescape"
)
-// stdlibConfig is serialized as the configuration.
+// StdlibConfig is serialized as the configuration.
//
// This contains everything required for stdlib analysis.
-type stdlibConfig struct {
+type StdlibConfig struct {
Srcs []string
GOOS string
GOARCH string
Tags []string
}
-// packageConfig is serialized as the configuration.
+// PackageConfig is serialized as the configuration.
//
// This contains everything required for single package analysis.
-type packageConfig struct {
+type PackageConfig struct {
ImportPath string
GoFiles []string
NonGoFiles []string
@@ -84,7 +83,7 @@ type saver func([]byte) error
//
// This is done because all stdlib data is stored together, and we don't want
// to load this data many times over.
-func (c *packageConfig) factLoader() (loader, error) {
+func (c *PackageConfig) factLoader() (loader, error) {
allFacts := make(map[string][]byte)
if c.StdlibFacts != "" {
data, err := ioutil.ReadFile(c.StdlibFacts)
@@ -114,7 +113,7 @@ func (c *packageConfig) factLoader() (loader, error) {
// shouldInclude indicates whether the file should be included.
//
// NOTE: This does only basic parsing of tags.
-func (c *packageConfig) shouldInclude(path string) (bool, error) {
+func (c *PackageConfig) shouldInclude(path string) (bool, error) {
ctx := build.Default
ctx.GOOS = c.GOOS
ctx.GOARCH = c.GOARCH
@@ -128,7 +127,7 @@ func (c *packageConfig) shouldInclude(path string) (bool, error) {
// files, and the facts. Note that this importer implementation will always
// pass when a given package is not available.
type importer struct {
- *packageConfig
+ *PackageConfig
fset *token.FileSet
cache map[string]*types.Package
lastErr error
@@ -185,14 +184,14 @@ func (i *importer) Import(path string) (*types.Package, error) {
// ErrSkip indicates the package should be skipped.
var ErrSkip = errors.New("skipped")
-// checkStdlib checks the standard library.
+// CheckStdlib checks the standard library.
//
// This constructs a synthetic package configuration for each library in the
-// standard library sources, and call checkPackage repeatedly.
+// standard library sources, and call CheckPackage repeatedly.
//
// Note that not all parts of the source are expected to build. We skip obvious
// test files, and cmd files, which should not be dependencies.
-func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]string, []byte, error) {
+func CheckStdlib(config *StdlibConfig, analyzers []*analysis.Analyzer) (allFindings []Finding, facts []byte, err error) {
if len(config.Srcs) == 0 {
return nil, nil, nil
}
@@ -225,7 +224,7 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
}
// Aggregate all files by directory.
- packages := make(map[string]*packageConfig)
+ packages := make(map[string]*PackageConfig)
for _, file := range config.Srcs {
if !strings.HasPrefix(file, rootSrcPrefix) {
// Superflouous file.
@@ -243,7 +242,7 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
}
c, ok := packages[pkg]
if !ok {
- c = &packageConfig{
+ c = &PackageConfig{
ImportPath: pkg,
GOOS: config.GOOS,
GOARCH: config.GOARCH,
@@ -262,7 +261,6 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
}
// Closure to check a single package.
- allFindings := make([]string, 0)
stdlibFacts := make(map[string][]byte)
stdlibErrs := make(map[string]error)
var checkOne func(pkg string) error // Recursive.
@@ -301,7 +299,7 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
}()
// Run the analysis.
- findings, factData, err := checkPackage(config, ac, checkOne)
+ findings, factData, err := CheckPackage(config, analyzers, checkOne)
if err != nil {
// If we can't analyze a package from the standard library,
// then we skip it. It will simply not have any findings.
@@ -344,7 +342,7 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
return allFindings, factData, nil
}
-// checkPackage runs all analyzers.
+// CheckPackage runs all given analyzers.
//
// The implementation was adapted from [1], which was in turn adpated from [2].
// This returns a list of matching analysis issues, or an error if the analysis
@@ -352,9 +350,9 @@ func checkStdlib(config *stdlibConfig, ac map[*analysis.Analyzer]matcher) ([]str
//
// [1] bazelbuid/rules_go/tools/builders/nogo_main.go
// [2] golang.org/x/tools/go/checker/internal/checker
-func checkPackage(config *packageConfig, ac map[*analysis.Analyzer]matcher, importCallback func(string) error) ([]string, []byte, error) {
+func CheckPackage(config *PackageConfig, analyzers []*analysis.Analyzer, importCallback func(string) error) (findings []Finding, factData []byte, err error) {
imp := &importer{
- packageConfig: config,
+ PackageConfig: config,
fset: token.NewFileSet(),
cache: make(map[string]*types.Package),
callback: importCallback,
@@ -406,7 +404,6 @@ func checkPackage(config *packageConfig, ac map[*analysis.Analyzer]matcher, impo
// Register fact types and establish dependencies between analyzers.
// The visit closure will execute recursively, and populate results
// will all required analysis results.
- diagnostics := make(map[*analysis.Analyzer][]analysis.Diagnostic)
results := make(map[*analysis.Analyzer]interface{})
var visit func(*analysis.Analyzer) error // For recursion.
visit = func(a *analysis.Analyzer) error {
@@ -421,27 +418,25 @@ func checkPackage(config *packageConfig, ac map[*analysis.Analyzer]matcher, impo
}
}
- // Prepare the matcher.
- m := ac[a]
- report := func(d analysis.Diagnostic) {
- if m.ShouldReport(d, imp.fset) {
- diagnostics[a] = append(diagnostics[a], d)
- }
- }
-
// Run the analysis.
factFilter := make(map[reflect.Type]bool)
for _, f := range a.FactTypes {
factFilter[reflect.TypeOf(f)] = true
}
p := &analysis.Pass{
- Analyzer: a,
- Fset: imp.fset,
- Files: syntax,
- Pkg: types,
- TypesInfo: typesInfo,
- ResultOf: results, // All results.
- Report: report,
+ Analyzer: a,
+ Fset: imp.fset,
+ Files: syntax,
+ Pkg: types,
+ TypesInfo: typesInfo,
+ ResultOf: results, // All results.
+ Report: func(d analysis.Diagnostic) {
+ findings = append(findings, Finding{
+ Category: AnalyzerName(a.Name),
+ Position: imp.fset.Position(d.Pos),
+ Message: d.Message,
+ })
+ },
ImportPackageFact: facts.ImportPackageFact,
ExportPackageFact: facts.ExportPackageFact,
ImportObjectFact: facts.ImportObjectFact,
@@ -464,7 +459,7 @@ func checkPackage(config *packageConfig, ac map[*analysis.Analyzer]matcher, impo
}
// Visit all analyzers recursively.
- for a, _ := range ac {
+ for _, a := range analyzers {
if imp.lastErr == ErrSkip {
continue // No local analysis.
}
@@ -473,114 +468,6 @@ func checkPackage(config *packageConfig, ac map[*analysis.Analyzer]matcher, impo
}
}
- // Convert all diagnostics to strings.
- findings := make([]string, 0, len(diagnostics))
- for a, ds := range diagnostics {
- for _, d := range ds {
- // Include the anlyzer name for debugability and configuration.
- findings = append(findings, fmt.Sprintf("%s: %s: %s", a.Name, imp.fset.Position(d.Pos), d.Message))
- }
- }
-
// Return all findings.
- factData := facts.Encode()
- return findings, factData, nil
-}
-
-var (
- packageFile = flag.String("package", "", "package configuration file (in JSON format)")
- stdlibFile = flag.String("stdlib", "", "stdlib configuration file (in JSON format)")
- findingsOutput = flag.String("findings", "", "output file (or stdout, if not specified)")
- factsOutput = flag.String("facts", "", "output file for facts (optional)")
- escapesOutput = flag.String("escapes", "", "output file for escapes (optional)")
-)
-
-func loadConfig(file string, config interface{}) interface{} {
- // Load the configuration.
- f, err := os.Open(file)
- if err != nil {
- log.Fatalf("unable to open configuration %q: %v", file, err)
- }
- defer f.Close()
- dec := json.NewDecoder(f)
- dec.DisallowUnknownFields()
- if err := dec.Decode(config); err != nil {
- log.Fatalf("unable to decode configuration: %v", err)
- }
- return config
-}
-
-// Main is the entrypoint; it should be called directly from main.
-//
-// N.B. This package registers it's own flags.
-func Main() {
- // Parse all flags.
- flag.Parse()
-
- var (
- findings []string
- factData []byte
- err error
- )
-
- // Check the configuration.
- if *packageFile != "" && *stdlibFile != "" {
- log.Fatalf("unable to perform stdlib and package analysis; provide only one!")
- } else if *stdlibFile != "" {
- // Perform basic analysis.
- c := loadConfig(*stdlibFile, new(stdlibConfig)).(*stdlibConfig)
- findings, factData, err = checkStdlib(c, analyzerConfig)
- } else if *packageFile != "" {
- // Perform basic analysis.
- c := loadConfig(*packageFile, new(packageConfig)).(*packageConfig)
- findings, factData, err = checkPackage(c, analyzerConfig, nil)
- // Do we need to do escape analysis?
- if *escapesOutput != "" {
- f, err := os.OpenFile(*escapesOutput, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
- if err != nil {
- log.Fatalf("unable to open output %q: %v", *escapesOutput, err)
- }
- defer f.Close()
- escapes, _, err := checkPackage(c, escapesConfig, nil)
- if err != nil {
- log.Fatalf("error performing escape analysis: %v", err)
- }
- for _, escape := range escapes {
- fmt.Fprintf(f, "%s\n", escape)
- }
- }
- } else {
- log.Fatalf("please provide at least one of package or stdlib!")
- }
-
- // Save facts.
- if *factsOutput != "" {
- if err := ioutil.WriteFile(*factsOutput, factData, 0644); err != nil {
- log.Fatalf("error saving findings to %q: %v", *factsOutput, err)
- }
- }
-
- // Open the output file.
- var w io.Writer = os.Stdout
- if *findingsOutput != "" {
- f, err := os.OpenFile(*findingsOutput, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
- if err != nil {
- log.Fatalf("unable to open output %q: %v", *findingsOutput, err)
- }
- defer f.Close()
- w = f
- }
-
- // Handle findings & errors.
- if err != nil {
- log.Fatalf("error checking package: %v", err)
- }
- if len(findings) == 0 {
- return
- }
-
- // Print findings.
- for _, finding := range findings {
- fmt.Fprintf(w, "%s\n", finding)
- }
+ return findings, facts.Encode(), nil
}
diff --git a/tools/nogo/register.go b/tools/nogo/register.go
deleted file mode 100644
index 34b173937..000000000
--- a/tools/nogo/register.go
+++ /dev/null
@@ -1,67 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "encoding/gob"
- "log"
-
- "golang.org/x/tools/go/analysis"
-)
-
-// analyzers returns all configured analyzers.
-func analyzers() (all []*analysis.Analyzer) {
- for a, _ := range analyzerConfig {
- all = append(all, a)
- }
- for a, _ := range escapesConfig {
- all = append(all, a)
- }
- return all
-}
-
-func init() {
- // Validate basic configuration.
- if err := analysis.Validate(analyzers()); err != nil {
- log.Fatalf("unable to validate analyzer: %v", err)
- }
-
- // Register all fact types.
- //
- // N.B. This needs to be done recursively, because there may be
- // analyzers in the Requires list that do not appear explicitly above.
- registered := make(map[*analysis.Analyzer]struct{})
- var register func(*analysis.Analyzer)
- register = func(a *analysis.Analyzer) {
- if _, ok := registered[a]; ok {
- return
- }
-
- // Regsiter dependencies.
- for _, da := range a.Requires {
- register(da)
- }
-
- // Register local facts.
- for _, f := range a.FactTypes {
- gob.Register(f)
- }
-
- registered[a] = struct{}{} // Done.
- }
- for _, a := range analyzers() {
- register(a)
- }
-}
diff --git a/tools/nogo/util/BUILD b/tools/nogo/util/BUILD
deleted file mode 100644
index 7ab340b51..000000000
--- a/tools/nogo/util/BUILD
+++ /dev/null
@@ -1,9 +0,0 @@
-load("//tools:defs.bzl", "go_library")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "util",
- srcs = ["util.go"],
- visibility = ["//visibility:public"],
-)
diff --git a/tools/nogo/util/util.go b/tools/nogo/util/util.go
deleted file mode 100644
index 919fec799..000000000
--- a/tools/nogo/util/util.go
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package util contains nogo-related utilities.
-package util
-
-import (
- "fmt"
- "io/ioutil"
- "regexp"
- "strconv"
- "strings"
-)
-
-// findingRegexp is used to parse findings.
-var findingRegexp = regexp.MustCompile(`([a-zA-Z0-9_\/\.-]+): (-|([a-zA-Z0-9_\/\.-]+):([0-9]+)(:([0-9]+))?): (.*)`)
-
-const (
- categoryIndex = 1
- fullPathAndLineIndex = 2
- fullPathIndex = 3
- lineIndex = 4
- messageIndex = 7
-)
-
-// Finding is a single finding.
-type Finding struct {
- Category string
- Path string
- Line int
- Message string
-}
-
-// ExtractFindingsFromFile loads findings from a file.
-func ExtractFindingsFromFile(filename string) ([]Finding, error) {
- content, err := ioutil.ReadFile(filename)
- if err != nil {
- return nil, err
- }
- return ExtractFindingsFromBytes(content)
-}
-
-// ExtractFindingsFromBytes loads findings from bytes.
-func ExtractFindingsFromBytes(content []byte) (findings []Finding, err error) {
- lines := strings.Split(string(content), "\n")
- for _, singleLine := range lines {
- // Skip blank lines.
- singleLine = strings.TrimSpace(singleLine)
- if singleLine == "" {
- continue
- }
- m := findingRegexp.FindStringSubmatch(singleLine)
- if m == nil {
- // We shouldn't see findings like this.
- return findings, fmt.Errorf("poorly formated line: %v", singleLine)
- }
- if m[fullPathAndLineIndex] == "-" {
- continue // No source file available.
- }
- // Cleanup the message.
- message := m[messageIndex]
- message = strings.Replace(message, " → ", "\n → ", -1)
- message = strings.Replace(message, " or ", "\n or ", -1)
- // Construct a new annotation.
- lineNumber, _ := strconv.ParseUint(m[lineIndex], 10, 32)
- findings = append(findings, Finding{
- Category: m[categoryIndex],
- Path: m[fullPathIndex],
- Line: int(lineNumber),
- Message: message,
- })
- }
- return findings, nil
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 12:19:46 +0000